Gary Allan Karpf, M.D.
Psychiatry Physician · Princeton, NJ
Gary Allan Karpf, M.D. is a psychiatry physician with a practice address in Princeton, New Jersey, and NPI 1679691679, issued on Mar 27, 2007. Check the license (New Jersey 25MA04232800, as entered in NPPES) on the New Jersey State Board of Medical Examiners; the Medicare figures below come from public CMS files.
- Name
- Gary Allan Karpf
- Credential
- M.D.
- Primary taxonomy
- Psychiatry Physician 2084P0800X
- License number
- 25MA04232800 NJ
Self-reported in NPPES; status is on the state search - Practice location
- 170 Cold Soil RD, Princeton, NJ 08540
- Phone
- (609) 896-1122
- Enumerated
- Mar 27, 2007
- Record last updated
- Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
- Fax
- (609) 896-2688
- Entity
- Type 1 · individual
8 nearest psychiatry physician records → All 1,520 in New Jersey → Look up another NPI →
Also registered at 170 Cold Soil RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Willard Apple, PH.D.Clinical Psychologist1386853315
- John Blake, M.D.Psychiatry Physician1982705877
- Patricia Carneval, MDPsychiatry Physician1174643829
- Adam Hauser, MDChild & Adolescent Psychiatry Physician1427271972
Verify Gary Allan Karpf in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersNew Jersey State Board of Medical Examiners
Search for license 25MA04232800Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
95% fewer Medicare Part D claims than the average psychiatry physician in 2024
50 Medicare Part D claims, against an average of 1,000 among the 35,054 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of claims.
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Gary Allan Karpf among 1,520 psychiatry physician records in New Jersey
Gary Allan Karpf, M.D. is one of 1,520 psychiatry physician records with a practice address in New Jersey. 73% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 44% of them.
- NPI issued2007 · 44% of these records are older, 38% newer
- In a Medicare fileYes · 73% of these records are
- In the CMS Doctors and Clinicians fileNo · 46% of these records are
- Record last updated2007 · 62% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2084P0800X and a New Jersey practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
72 psychiatry physician records list a practice address in Princeton
They are 72 of the 1,622 NPPES records with a practice address in Princeton, and 1,520 psychiatry physician records in New Jersey.
All 1,520 in New Jersey → Every provider in Princeton → Psychiatry Physician nationwide →
The 8 psychiatry physician records with the nearest ZIP codes
- Tunku Abubakar, MDPrinceton, NJ 085401275571515
- Irina Benaur, M.D.Princeton, NJ 085401477656783
- John Blake, M.D.Princeton, NJ 085401982705877
- Sonja Gray, M.D.Princeton, NJ 085401043304108
- Philippe Khouri, M.D.Princeton, NJ 085401689768830
- Jeffrey Mattes, MDPrinceton, NJ 085401104823806
- Iluminado Ortanez, M.D.Princeton, NJ 085401154415222
- Richard Prus-Wisniewski, M.D.Princeton, NJ 085401558455535
Common questions
What is Gary Allan Karpf, M.D.'s NPI number?
Gary Allan Karpf, M.D.'s National Provider Identifier (NPI) is 1679691679, issued on Mar 27, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Gary Allan Karpf, M.D. located?
The NPPES record lists a practice address at 170 Cold Soil RD, Princeton, NJ, 08540. Phone: (609) 896-1122. Providers update this record themselves, so call before visiting.
How can I verify Gary Allan Karpf, M.D.'s license?
NPPES lists New Jersey license number 25MA04232800, as entered by the provider. Search the New Jersey State Board of Medical Examiners at https://newjersey.mylicense.com/verification/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Gary Allan Karpf, M.D. prescribe under Medicare Part D?
In 2024, Gary Allan Karpf, M.D. had 50 Medicare Part D claims; the average among psychiatry physician prescribers was 1,000. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.